Possibly, but I think that has more to do with Virginia’s electoral votes.
I don't disagree, but Kaine has to bring more than VA into play. He speaks Spanish too. Bayh is Episcopalian. Obama needs Catholic support in OH & MI. Kaine is way light on experience. I've watched his entire political career from Richmond city council onward. But with Obama, fitness to step into the role of president is not a consideration. If it were, Obama himself wouldn't be running. Whomever BHO puts on the ticket will be there solely for electability reasons.